TY - GEN
T1 - The effect of multi-point electrical paths on global springback elimination in single point incremental forming
AU - Niebauer, Jacklyn
AU - Shaffer, Derek
AU - Ragai, Ihab
AU - Roth, John T.
N1 - Funding Information:
Partial funding was provided by Pennsylvania State Undergraduate Research Grant. The authors would like to thank the Boeing and The Ford Motor Company for their support, as well as their partner, MIT. The authors would also like to thank Mr. Glenn Craig for the fabrication of all fixtures used in this paper.
Publisher Copyright:
©2017 ASME.
PY - 2017
Y1 - 2017
N2 - Automotive and aerospace industries are interested in implementing die-less forming processes in order to reduce part costs and the required forming energy. One method of die-less forming is incremental forming, in which a sheet metal part is formed; typically with a hemispherical tool that deforms material as it pushes into the material and passes along the surface to create the desired part geometry. One problem with incremental forming is global springback, which occurs after the part has been formed and is released from the forming fixture. This effect is caused by residual stresses that are created during part deformation and result in geometric inaccuracies after the clamping force has been released. In this paper, the effect of post-deformation applied direct current on the springback of pre-formed sheet metal will be investigated. This is a process is a type of electrically assisted manufacturing (EAM). This paper is a continuation of previous works presented at MSEC 2015-2016. The initial feasibility study described herein already achieves a springback reduction of 26.3% and is dependent on the regions of high stress concentration as well as current density. Future work will extend this reduction through further testing of complex configurations.
AB - Automotive and aerospace industries are interested in implementing die-less forming processes in order to reduce part costs and the required forming energy. One method of die-less forming is incremental forming, in which a sheet metal part is formed; typically with a hemispherical tool that deforms material as it pushes into the material and passes along the surface to create the desired part geometry. One problem with incremental forming is global springback, which occurs after the part has been formed and is released from the forming fixture. This effect is caused by residual stresses that are created during part deformation and result in geometric inaccuracies after the clamping force has been released. In this paper, the effect of post-deformation applied direct current on the springback of pre-formed sheet metal will be investigated. This is a process is a type of electrically assisted manufacturing (EAM). This paper is a continuation of previous works presented at MSEC 2015-2016. The initial feasibility study described herein already achieves a springback reduction of 26.3% and is dependent on the regions of high stress concentration as well as current density. Future work will extend this reduction through further testing of complex configurations.
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U2 - 10.1115/MSEC20173036
DO - 10.1115/MSEC20173036
M3 - Conference contribution
AN - SCOPUS:85027697291
T3 - ASME 2017 12th International Manufacturing Science and Engineering Conference, MSEC 2017 collocated with the JSME/ASME 2017 6th International Conference on Materials and Processing
BT - Processes
PB - American Society of Mechanical Engineers
T2 - ASME 2017 12th International Manufacturing Science and Engineering Conference, MSEC 2017 collocated with the JSME/ASME 2017 6th International Conference on Materials and Processing
Y2 - 4 June 2017 through 8 June 2017
ER -